− q 7 / 2 + 4 q 5 / 2 − 9 q 3 / 2 + 16 q − 23 q + 26 q 3 / 2 − 27 q 5 / 2 + 23 q 7 / 2 − 18 q 9 / 2 + 11 q 11 / 2 − 5 q 13 / 2 + 1 q 15 / 2 {\displaystyle -q^{7/2}+4q^{5/2}-9q^{3/2}+16{\sqrt {q}}-{\frac {23}{\sqrt {q}}}+{\frac {26}{q^{3/2}}}-{\frac {27}{q^{5/2}}}+{\frac {23}{q^{7/2}}}-{\frac {18}{q^{9/2}}}+{\frac {11}{q^{11/2}}}-{\frac {5}{q^{13/2}}}+{\frac {1}{q^{15/2}}}}
